This barmy conspiracy theory cropped up on Quora not long back.
Some people apparently believe that white supremacists broke the noses off ancient Egyptian statues, so people who saw them wouldn't think they were depictions of black Africans.
There are usually photos of the Sphynx or damaged statues similar to this to "prove" the point:
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Which, of course, utterly ignores that fact that, if an ancient statue topples to the ground, a protuberance like the nose, will be the first point of damage. There is also iconoclasm to consider - subsequent religions thought it was morally justified to damage pagan idols and there are historical accounts of such "righteous" vandalism. Finally, those white supremacists were obviously a bit slacking, as plenty of ancient Egyptian statues survived remarkably well intact!
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